In Settings (cog wheel R corner), no Battery for adaptive battery setting
- Should be Settings->Device Care->Battery Click the 3 dots in upper right, toggle for adaptive battery
In Settings no System tab
- Not sure what you are looking for here
In Settings, accessibility, no Use Service
- Not sure what you are looking for here either
No 'pill' button on home page
Are you talking about the navigation panel? There is an option to use gestures - Settings -> Display -> Navigation Bar and make sure navigation buttons is selected instead of full screen gestures
In Settings, no Apps and Notifications. Just Apps OR Notifications
Agreed it is not as intuitive. You can get to notifications if you click on any app in the "apps" setting section. If you long press on any app, then select app info, you can get to the notifications much quicker. The notifications section of settings is for more broad general settings. Don't know why they wanted to split it
No lockdown mode with power button
Settings -> Lockscreen -> Secure Lock Settings Toggle for show lockdown option
No vertical volume control slider